Endora's latest spell causes Darrin to crack bad jokes at the most inappropriate times. When he begins laughing hysterically at the misfortunes of his humorless client, Jameson (Charles Lane), and Jameson's equally taciturn wife (Ysabel MacCloskey), it looks as though Darrin is once more headed for the unemployment line. But with Samantha's help, Darrin has the last laugh on Endora. A pre-Bob Newhart Show Marcia Wallace appears as Betty. Written by Ed Jurist, "Laugh, Clown, Laugh" first aired on April 15, 1971. ~ Hal Erickson, Rovi